Details about our Urine Toxicology Screen updated per email from Dr. Das in 5/2015

The following Benzodiazepines are readily detected by our urine benzodiazepine immunoassay:
Alprazolam (Xanax) and metabolites
Chlordiazepoxide (Librium) metabolites
Clobazam (Frisium)
Clorazepate (Tranxene) metabolites
Diazepam (Valium) metabolites
Estazolam (ProSom) and metabolites
Flurazepam (Dalmane) and metabolites
Halazepam (Paxipam) and metabolites
Lorazepam (Ativan)
Medazepam (Nobium) and metabolites
Midazolam (Versed) and metabolites
Oxazepam (Serax)
Prazepam (Centrax, Verstran) and metabolites
Temazapam (Restoril) and metabolites
Tetrazepam (Megavix) and metabolites

The benzodiazepine Flunitrazepam (Rohypnol) are generally not detected, but may be positive in cases of concentrated urines, high dosages or recent ingestions.

Clonazepam (Klonopin) is the only common benzodiazepine that will probably not be detected by our immunoassay tests. It is very rare when the ingestion of clonazepam results in a positive benzodiazepine immunoassay screen.

For Opiates our Urine Immunoassay will reliably detect Codeine, Morphine, Hydrocodone, and Hydromorphone.

When the concentration of Oxycodone or Oxymorphone is very high (>10,000 ng/mL), the opiate assay will detect Oxycodone and Oxymorphone. Following Oxycodone ingestion, it is rare when the concentration exceeds 10,000 ng/mL. Therefore, we suggest that you use a test that includes an individual Oxycodone Immunoassay if you are interested in Oxycodone or Oxymophone. Our test code 4422U is a screen and confirmation test for Oxycodone and Oxymorphone.


For Amphetamines all amphetamines are reliably detected, GCMS is needed to differentiate by type (e.g. methamphetamine versus dextroamphetamine)